객관식
In which type of cell division do homologous chromosomes pair (synapsis) and form tetrads as part of the normal process?
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17. Meiosis and Sexual Reproduction
Meiosis
객관식
Which process occurs in both mitosis and meiosis?
A
Crossing over between homologous chromosomes
B
Separation of sister chromatids
C
Reduction of chromosome number from diploid to haploid
D
Pairing (synapsis) of homologous chromosomes
검증된 단계별 안내1
Step 1: Understand the key processes unique to mitosis and meiosis. Mitosis is a cell division process that results in two identical daughter cells, maintaining the chromosome number, while meiosis reduces the chromosome number by half to produce gametes.
Step 2: Identify processes exclusive to meiosis, such as crossing over between homologous chromosomes and pairing (synapsis) of homologous chromosomes, which occur during prophase I of meiosis but not in mitosis.
Step 3: Recognize that reduction of chromosome number from diploid to haploid is a hallmark of meiosis, specifically during the first meiotic division, and does not occur in mitosis.
Step 4: Focus on the separation of sister chromatids, which occurs during anaphase of mitosis and also during anaphase II of meiosis, making it a process common to both types of cell division.
Step 5: Conclude that the process occurring in both mitosis and meiosis is the separation of sister chromatids, as it is essential for proper chromosome segregation in both divisions.
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